Prev Next multi_newton_common

@(@\newcommand{\W}[1]{ \; #1 \; } \newcommand{\R}[1]{ {\rm #1} } \newcommand{\B}[1]{ {\bf #1} } \newcommand{\D}[2]{ \frac{\partial #1}{\partial #2} } \newcommand{\DD}[3]{ \frac{\partial^2 #1}{\partial #2 \partial #3} } \newcommand{\Dpow}[2]{ \frac{\partial^{#1}}{\partial {#2}^{#1}} } \newcommand{\dpow}[2]{ \frac{ {\rm d}^{#1}}{{\rm d}\, {#2}^{#1}} }@)@This is cppad-20221105 documentation. Here is a link to its current documentation .
Common Variables use by Multi-Threaded Newton Method

Purpose
This source code defined the common include files, defines, and variables that are used by the multi-newton method.

Source 

# include <cppad/cppad.hpp>
# include <cppad/utility/time_test.hpp>
# include <cmath>
# include <cstring>
# include "multi_newton.hpp"
# include "team_thread.hpp"
# define USE_THREAD_ALLOC_FOR_WORK_ALL 1

namespace {
    using CppAD::thread_alloc; // fast multi-threadeding memory allocator
    using CppAD::vector;       // uses thread_alloc

    // number of threads, set by multi_newton_time.
    size_t num_threads_ = 0;

    // function we are finding zeros of, set by multi_newton_time
    void (*fun_)(double x, double& f, double& df) = 0;

    // convergence criteria, set by multi_newton_setup
    double epsilon_ = 0.;

    // maximum number of iterations, set by  multi_newton_setup
    size_t max_itr_ = 0;

    // length for all sub-intervals
    double sub_length_ = 0.;

    // structure with information for one thread
    typedef struct {
        // number of sub intervals (worker input)
        size_t num_sub;
        // beginning of interval (worker input)
        double xlow;
        // end of interval (worker input)
        double xup;
        // vector of zero candidates (worker output)
        // after call to multi_newton_setup:    x.size() == 0
        // after call to multi_newton_work:     x.size() is number of zeros
        // after call to multi_newton_takedown: x.size() == 0
        vector<double> x;
        // false if an error occurs, true otherwise (worker output)
        bool   ok;
    } work_one_t;
    // vector with information for all threads
    // after call to multi_newton_setup:    work_all.size() == num_threads
    // after call to multi_newton_takedown: work_all.size() == 0
    // (use pointers instead of values to avoid false sharing)
    vector<work_one_t*> work_all_;
}
Input File: example/multi_thread/multi_newton.cpp